CST to JST Converter
See the current time in CST (Chicago) and JST (Tokyo) side by side, the exact time difference right now, and convert any time between the two zones.
CST to JST Converter
Uses your browser's built-in, DST-aware time-zone data.
About converting CST to JST
Central Time (Chicago) and Japan Standard Time (Tokyo) are in different time zones, so a meeting, call or stream that's convenient in one may be early or late in the other. The clocks above update live and account for daylight saving automatically, so the time difference you see is the real one for today — not a fixed number that goes stale twice a year.
To plan across the two, type a time into the CST box (or tap a quick preset) and read the JST equivalent, including a "next day" or "previous day" note when the conversion crosses midnight. For any other pair of zones or cities, use the full timezone converter.
CST vs JST: the time difference through the year
The gap between CST and JST changes during the year because only one of them uses daylight saving.
| Period | Difference |
|---|---|
| Oct 23, 2026 – Oct 31, 2026 | JST 14 h ahead of CST |
| Nov 1, 2026 – Mar 13, 2027 | JST 15 h ahead of CST |
| Mar 14, 2027 – Oct 23, 2027 | JST 14 h ahead of CST |
Daylight-saving changes in the next year
| Zone | Date | Offset | Change |
|---|---|---|---|
| CST | Nov 1, 2026 | UTC−5 → UTC−6 | Clocks go back 1 hour |
| CST | Mar 14, 2027 | UTC−6 → UTC−5 | Clocks go forward 1 hour |
| CST | Nov 7, 2027 | UTC−5 → UTC−6 | Clocks go back 1 hour |
CST to JST conversion table
| CST | JST (when 14 h ahead) | JST (when 15 h ahead) |
|---|---|---|
| 12:00 AM | 2:00 PM | 3:00 PM |
| 1:00 AM | 3:00 PM | 4:00 PM |
| 2:00 AM | 4:00 PM | 5:00 PM |
| 3:00 AM | 5:00 PM | 6:00 PM |
| 4:00 AM | 6:00 PM | 7:00 PM |
| 5:00 AM | 7:00 PM | 8:00 PM |
| 6:00 AM | 8:00 PM | 9:00 PM |
| 7:00 AM | 9:00 PM | 10:00 PM |
| 8:00 AM | 10:00 PM | 11:00 PM |
| 9:00 AM | 11:00 PM | 12:00 AM (next day) |
| 10:00 AM | 12:00 AM (next day) | 1:00 AM (next day) |
| 11:00 AM | 1:00 AM (next day) | 2:00 AM (next day) |
| 12:00 PM | 2:00 AM (next day) | 3:00 AM (next day) |
| 1:00 PM | 3:00 AM (next day) | 4:00 AM (next day) |
| 2:00 PM | 4:00 AM (next day) | 5:00 AM (next day) |
| 3:00 PM | 5:00 AM (next day) | 6:00 AM (next day) |
| 4:00 PM | 6:00 AM (next day) | 7:00 AM (next day) |
| 5:00 PM | 7:00 AM (next day) | 8:00 AM (next day) |
| 6:00 PM | 8:00 AM (next day) | 9:00 AM (next day) |
| 7:00 PM | 9:00 AM (next day) | 10:00 AM (next day) |
| 8:00 PM | 10:00 AM (next day) | 11:00 AM (next day) |
| 9:00 PM | 11:00 AM (next day) | 12:00 PM (next day) |
| 10:00 PM | 12:00 PM (next day) | 1:00 PM (next day) |
| 11:00 PM | 1:00 PM (next day) | 2:00 PM (next day) |
Best time to meet
- 9 AM–5 PM overlap when JST is 14 h aheadnone — closest fit 6:00 PM–8:00 PM CST = 8:00 AM–10:00 AM JST (8 AM–8 PM in both)
- 9 AM–5 PM overlap when JST is 15 h aheadnone — closest fit 5:00 PM–8:00 PM CST = 8:00 AM–11:00 AM JST (8 AM–8 PM in both)
The two zones
Central Time is UTC−6 in winter (CST) and UTC−5 in summer (CDT). It covers Chicago, Dallas, Houston, Mexico City (which no longer uses DST) and Winnipeg. US daylight saving runs from the second Sunday in March to the first Sunday in November.
Japan Standard Time is UTC+9 all year. Japan has not used daylight saving since 1951.